Revert "feature #1678: Datastores report LN and CLONE target as SYSTEM, SELF or NONE"

This reverts commit 7a02a4cf9667cf105242e19fa745378d3282c56b.

Conflicts:
	src/image/ImageManagerDriver.cc
Feature #1678: Move TM_MAD ln and clone target definitions to oned.conf
Merge branch 'feature-1678' of git.opennebula.org:one into feature-1678